Stable brace and blade shaft combined type large round frame wind wheel

Abstract

The utility model discloses a stable brace and blade shaft combined type large round frame wind wheel, which relates to the technical field of wind power generation and comprises a horizontal shaft, a horizontal shaft connecting bracket, a horizontal shaft round frame and a large round frame, the horizontal shaft round frame is fixedly arranged on the horizontal shaft through the horizontal shaft connecting support, the large round frame is fixedly arranged on the outer side of the horizontal shaft round frame, blade shafts are arranged on the inner side and the outer side of the large round frame, blades are fixedly installed on the blade shafts, and stable blade braces are arranged between the horizontal shaft round frame and the large round frame. According to the wind wheel, the blades are modularized, on-site assembly is conducted through the stable blade braces, the wind wheel can be conveniently transported, the installation difficulty of the wind wheel is lowered, accidents are reduced, meanwhile, the multiple blades can enable the wind wheel to normally run under the breeze condition, and the wind wheel is convenient to use and high in practicability. And the annual power generation time of the wind wheel vehicle is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a large-scale circular frame wind wheel combined with a stable brace and a blade shaft. Background Art

[0002] A windmill is a mechanical device that uses wind as energy and does not require fuel. Modern windmills mostly refer to wind turbines for power generation, which use wind power to drive the windmill blades to rotate, and then increase the speed of rotation through a speed increaser to drive the generator to generate electricity.

[0003] The current three-blade large windmills have the following defects:

[0004] 1. Because the blades are too long and difficult to transport, they may break in actual applications;

[0005] 2. The efficiency of power generation by three large blades is low, breeze cannot work, and the power generation time throughout the year is too short;

[0006] 3. The installation is difficult and requires a special large crane. The installation process is very unsafe. For example, if there is a sudden wind during the installation process, the crane will be unstable and easily cause an accident. Utility Model Content

[0007] In order to solve the problems existing in the above-mentioned related technologies, this application provides the following technical solutions:

[0008] A large circular frame wind wheel composed of a stabilizing pull rod and a blade shaft comprises a horizontal shaft, a horizontal shaft connecting bracket, a horizontal shaft circular frame and a large circular frame; the horizontal shaft circular frame is fixedly arranged on the horizontal shaft through the horizontal shaft connecting bracket, the large circular frame is fixedly arranged on the outer side of the horizontal shaft circular frame, the inner and outer sides of the large circular frame are provided with blade shafts, blades are fixedly mounted on the blade shafts, a stabilizing blade pull rod is arranged between the horizontal shaft circular frame and the large circular frame, and the blade shaft on the inner side of the large circular frame is stably mounted on the stabilizing blade pull rod.

[0009] As a preferred solution of a large circular frame wind wheel composed of a stabilizing rod and a blade shaft as described in the present application, a plurality of groups of large circular frame stabilizing inclined rods are arranged between the horizontal axis circular frame and the large circular frame for interconnected pulling, and the plurality of groups of large circular frame stabilizing inclined rods are rotationally symmetrically distributed around the horizontal axis.

[0010] As a preferred solution of the large circular frame wind wheel combined with a stabilizing pull rod and a blade shaft described in the present application, the blades are arranged in at least three groups, and the blades outside the two adjacent groups of the large circular frame are provided with linkage pull wires, and the large circular frame is provided with a power device for driving the blades to adjust the windward angle.

[0011] As a preferred solution of the large circular frame wind wheel combined with a stabilizing pull rod and a blade shaft described in the present application, the power device adopts an electric motor with a winding wire rope, the end of the winding wire rope is fixedly connected to the blade, and the large circular frame is also provided with an elastic puller for stabilizing the windward angle of the blade.

[0012] As a preferred solution of the large circular frame wind wheel combined with a stable pull rod and a blade shaft described in the present application, the elastic pull member is a tension spring, one end of the tension spring is fixedly connected to the large circular frame, and the other end is fixedly connected to the blade.

[0013] As a preferred solution of a large circular frame wind wheel combined with a stabilizing pull rod and a blade shaft described in the present application, the outer wall of the large circular frame is provided with a positioning boss for installing the blade shaft outside the large circular frame, and the blade shaft outside the large circular frame is rotatably installed on the positioning boss.

[0014] As a preferred solution of the large circular frame wind wheel combined with a stabilizing pull rod and a blade shaft described in the present application, a wear-resistant part is arranged between the blade shaft inside the large circular frame and the stabilizing blade pull rod, and a locking part is arranged on the stabilizing blade pull rod for preventing the wear-resistant part from detaching from the blade shaft.

[0015] As a preferred solution of a large circular frame wind wheel combined with a stabilizing pull rod and a blade shaft described in the present application, the blades include a windward front blade and a tail blade, the windward front blade is located at the front part of the windward surface of the blade, the tail blade is located at the rear part of the windward surface of the blade, and the length of the windward front blade is smaller than the length of the tail blade.

[0016] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0017] 1. The blades in this case are all modularized, which is convenient for transportation. They are assembled and fixed on the blade shaft on site, and then stably installed on the wind wheel through the stable blade tie rods. This not only facilitates the transportation of the wind wheel, but also reduces the difficulty of installing the wind wheel. It completely solves the current transportation problems of large wind turbines, the problems of on-site installation, and the problems of hoisting during wind installation, and greatly reduces the occurrence of accidents.

[0018] 2. This case uses a large round frame, which is fixed with a steel wire rope. This method forms a large round frame wheel, and there are tension rods in the middle to fix the blade shaft. In this way, the blades are more stable and reliable and are not afraid of typhoon attacks.

[0019] 3. In this case, a power device is installed and a wind speed and direction instrument is used to control the blade pitch, so that the blade can adjust the windward angle according to the real-time wind force. When strong winds come, the blade angle can be changed to reduce the windward area of ​​the blade and the wind resistance of the blade, thereby solving the unsafe factors caused by the strong wind resistance of the blade; on the contrary, the windward area of ​​the blade is increased in light wind weather, so that the wind wheel can operate normally at a lower wind speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the wind wheel in this application;

[0021] Figure 2 It is a side cross-sectional schematic diagram of the wind wheel in this application;

[0022] Figure 3 It is a schematic diagram of a cross section of a blade shaft in this application;

[0023] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0024] Figure 5 This is a cross-sectional schematic diagram of a blade shaft in half assembly mode in accordance with the present application;

[0025] Figure 6 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0026] Figure 7 for Figure 2 The enlarged schematic diagram of the center C;

[0027] Figure 8 This is a schematic diagram of the local structure of the present application showing the adjustment of the windward angle of the blades.

[0028] In the figure: horizontal axis 1, horizontal axis connecting bracket 2, horizontal axis circular frame 3, large circular frame 4, blade axis 5, blade 6, blade stabilizing rod 7, large circular frame stabilizing inclined rod 8, linkage cable 9, power device 10, elastic pull piece 11, positioning boss 12, bearing 13, wear-resistant part 14, locking part 15, windward front blade 16, tail blade 17, outer ring 18, inner ring 19, inner and outer ring brackets 20, blade stabilizing bracket 21. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of this application clearer, the following Figure 1-8 The implementation methods of the present application are described in further detail.

[0030] This embodiment provides a large circular wind wheel with a combination of a stable brace and a blade shaft. Figure 1 and Figure 2The large circular frame wind wheel combined with a stabilizing brace and a blade axis comprises a horizontal axis 1, a horizontal axis connecting bracket 2, a horizontal axis circular frame 3 and a large circular frame 4; the horizontal axis circular frame 3 is fixedly arranged on the horizontal axis 1 through the horizontal axis connecting bracket 2, and the large circular frame 4 is fixedly arranged on the outer side of the horizontal axis circular frame 3, and a plurality of groups of large circular frame stabilizing inclined braces 8 are arranged between the horizontal axis circular frame 3 and the large circular frame 4 for mutual pulling connection, and the plurality of groups of large circular frame stabilizing inclined braces 8 are rotationally symmetrically distributed with the horizontal axis 1 as the center.

[0031] Blade shafts 5 are provided on the inner and outer sides of the large circular frame 4 , and blades 6 are fixedly mounted on the blade shafts 5 . A stabilizing blade pull bar 7 is provided between the horizontal axis circular frame 3 and the large circular frame 4 , and the blade shaft 5 on the inner side of the large circular frame 4 is firmly mounted on the stabilizing blade pull bar 7 .

[0032] See also Figure 2 , Figure 3 and Figure 4 The blade shaft 5 in this case is composed of an outer ring 18, an inner ring 19 and an inner and outer ring bracket 20 connected as a whole; the inner ring 19 and the outer ring 18 of the blade shaft 5 are both in the shape of a round tube, and the inner ring 19 and the outer ring 18 are connected as a whole through the inner and outer ring bracket 20; the blade shaft 5 can be made of metal, or can be formed by extrusion of aluminum alloy. The outer ring 18 of the blade shaft 5 can also adopt various cross-sectional shapes, as long as the purpose of stabilizing the blade 6 is achieved.

[0033] In this case, blade stabilizing brackets 21 are provided on both sides of the blade shaft 5. The blade stabilizing brackets 21 can be fixedly connected to the blade shaft 5 and the blade 6 by bolts, thereby stabilizing the blade 6 and improving the typhoon resistance of the blade 6.

[0034] See also Figure 2 and Figure 5 In other embodiments, the blade shaft 5 can also be formed by extruding two half-circles and then assembled into one through on-site installation. The main purpose is to facilitate on-site installation.

[0035] See also Figure 2 , Figure 5 and Figure 6 A wear-resistant part 14 is provided between the blade shaft 5 on the inner side of the large circular frame 4 and the stabilizing blade pull strip 7, which can greatly extend the service life of the blade shaft 5 and the stabilizing blade pull strip 7. In the present case, the wear-resistant part 14 is a cylindrical tubular metal strip, and the wear-resistant part 14 in other embodiments may also be made of wear-resistant alloys or non-metallic parts. The wear-resistant part 14 may also be composed of two halves, which is convenient for installation and replacement. A locking part 15 is provided on the stabilizing blade pull strip 7 for preventing the wear-resistant part 14 from detaching from the blade shaft 5. The locking part 15 is detachably fixed to the stabilizing blade pull strip 7. The locking part 15 in the present case is a wire rope buckle, and any component that can perform a locking function may also be used in other embodiments.

[0036] See also Figure 2 and Figure 7 The outer wall of the large circular frame 4 is provided with a positioning boss 12 for installing the blade shaft 5 outside the large circular frame 4. The positioning boss 12 in this case is a cylindrical block, and the positioning boss 12 is integrally formed with the large circular frame 4. The blade shaft 5 outside the large circular frame 4 is rotatably installed on the positioning boss 12 through a bearing 13.

[0037] See also Figure 1 and Figure 8 At least three groups of blades 6 are provided. In this case, eight groups of blades 6 are provided. The blades 6 outside two adjacent groups of large circular frames 4 are provided with linkage pull wires 9. In this case, the linkage pull wires 9 are specifically steel wire pull wires. The large circular frame 4 is provided with a power device 10 for driving the blades 6 to adjust the windward angle. The power device 10 pulls the blades 6 to swing, thereby adjusting the windward angle of the blades 6.

[0038] In the present case, the power device 10 adopts an electric motor with a winding wire rope, and the end of the winding wire rope is fixedly connected to the blade 6. In other embodiments, the power device 10 may also adopt an oil hydraulic press. The power device 10 in the present case is controlled by a wind speed and wind direction instrument. When the wind speed is high, the wind speed and wind direction instrument transmits a signal to control the oil hydraulic press or the electric motor to pull the blade 6 to adjust the windward angle of the blade 6, thereby solving the unsafe factors caused by the strong wind resistance of the blade 6. The large circular frame 4 is also provided with an elastic puller 11 for stabilizing the windward angle of the blade 6. The elastic puller 11 specifically adopts a tension spring, one end of which is fixedly connected to the large circular frame 4, and the other end is fixedly connected to the blade 6. The coordination between the tension spring and the power device 10 can make the blade 6 more stable during use.

[0039] In this case, the blade 6 includes a windward front blade 16 and a tail blade 17. The windward front blade 16 is located at the front part of the windward surface of the blade 6, and the tail blade 17 is located at the rear part of the windward surface of the blade 6. The length of the windward front blade 16 is smaller than the length of the tail blade 17. This method can prevent the unsafe factors caused by the instantaneous wind attack in the typhoon.

[0040] See also Figure 1 and Figure 2The wind wheel in this case is mainly used for large-scale breeze wind wheel vehicles, which require more blades 6 to absorb breeze and generate power, so the stability of each blade 6 is very important, especially the typhoon resistance. The blades 6 in the large circular frame 4 are combined with a stable blade pull rod 7 (or steel wire) and a blade shaft 5, which completely solves the reliability and safety of the blades 6 in the large circular frame 4; the blades 6 outside the large circular frame 4 are not only firmly connected to the blades 6 in the large circular frame 4 by flanges and bolts, but the blade shaft 5 outside the large circular frame 4 and the blade shaft 5 inside the large circular frame 4 can also be connected together by a movable connecting rod, so that the blades 6 outside the large circular frame 4 and the blades 6 inside the large circular frame 4 are also linked; in addition, in order to better make the blades 6 outside the large circular frame 4 firm and reliable, among the multiple blades 6 outside the large circular frame 4, two adjacent blades 6 are connected by steel wire pulling lines to pull each other, which will make each blade 6 more stable and greatly improve the typhoon resistance.

[0041] Although the present application has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present application may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A large circular wind wheel with a combination of a stable brace and a blade shaft, characterized in that: The invention comprises a horizontal axis (1), a horizontal axis connecting bracket (2), a horizontal axis circular frame (3) and a large circular frame (4); the horizontal axis circular frame (3) is fixedly arranged on the horizontal axis (1) through the horizontal axis connecting bracket (2); the large circular frame (4) is fixedly arranged on the outside of the horizontal axis circular frame (3); a blade shaft (5) is arranged on the inside and outside of the large circular frame (4); a blade (6) is fixedly mounted on the blade shaft (5); a blade stabilizing strip (7) is arranged between the horizontal axis circular frame (3) and the large circular frame (4); and the blade shaft (5) on the inside of the large circular frame (4) is stably mounted on the blade stabilizing strip (7).

2. A large circular wind wheel with a combination of a stabilizing brace and a blade shaft according to claim 1, characterized in that: A plurality of groups of large circular frame stabilizing inclined braces (8) are arranged between the horizontal axis circular frame (3) and the large circular frame (4) for interconnected pulling connection. The plurality of groups of large circular frame stabilizing inclined braces (8) are rotationally symmetrically distributed with the horizontal axis (1) as the center.

3. A large circular wind wheel with a combination of a stabilizing brace and a blade shaft according to claim 1, characterized in that: The blades (6) are provided in at least three groups, and the blades (6) outside the large circular frame (4) of two adjacent groups are provided with linkage pull wires (9), and the large circular frame (4) is provided with a power device (10) for driving the blades (6) to adjust the windward angle.

4. A large circular wind wheel with a combined type of stable bracing bar and blade shaft according to claim 3, characterized in that: The power device (10) uses an electric motor with a winding wire rope, the end of the winding wire rope is fixedly connected to the blade (6), and the large circular frame (4) is also provided with an elastic puller (11) for stabilizing the windward angle of the blade (6).

5. A large circular wind wheel with a combined type of stable bracing bar and blade shaft according to claim 4, characterized in that: The elastic pull member (11) is a tension spring, one end of which is fixedly connected to the large circular frame (4), and the other end of which is fixedly connected to the blade (6).

6. The large circular wind wheel with a combined type of stable bracing bar and blade shaft according to claim 1, characterized in that: The outer wall of the large circular frame (4) is provided with a positioning boss (12) for mounting the outer blade shaft (5) of the large circular frame (4); the outer blade shaft (5) of the large circular frame (4) is rotatably mounted on the positioning boss (12).

7. The large circular wind wheel with a combined stabilizing brace and blade shaft according to claim 1, characterized in that: A wear-resistant part (14) is provided between the blade shaft (5) inside the large circular frame (4) and the blade-stabilizing pull bar (7), and a locking part (15) is provided on the blade-stabilizing pull bar (7) for preventing the wear-resistant part (14) from detaching from the blade shaft (5).

8. The large circular wind wheel with a combined stabilizing brace and blade shaft according to claim 1, characterized in that: The blade (6) comprises a windward front blade (16) and a tail blade (17); the windward front blade (16) is located at a front portion of a windward surface of the blade (6); the tail blade (17) is located at a rear portion of the windward surface of the blade (6); and the length of the windward front blade (16) is shorter than the length of the tail blade (17).

Images